2101(2301)型自力式微(差)压调节阀

P1 signal pressure

192

Product

BAIC GROUP

2101(2301) Type Self-Operated Micro (Differential) Pressure Regulator

Figure 1 Differential (micro) pressure regulator outline

2301 type self-operated differential pressure valve does

not need external energy to automatically regulate the

differential pressure of one or two media, so that the

differential pressure is maintained at a constant value, such

as in the industrial furnace gas combustion system, used to

control the A, B two kinds of fuel mixing ratio flow regulation,

to achieve the ideal combustion conditions, saving fuel and

investment, it can also be used in the regulation system of

reduced pressure, micro-pressure and differential pressure of

various industrial gases, such as gas, natural gas, liquefied

petroleum gas, ammonia, nitrogen, oxygen and so on. It can

also be used in sealing oil systems for hydrogen-cooled

generator sets to control the pressure difference between the

sealing oil and hydrogen to ensure a reliable seal.

Micro-pressure valve can be used in place of the 2407-

16K type self-operated pressure regulator with pilot when in

front of the control valve.

When the low-pressure end of the differential pressure

valve connected to atmosphere, it becomes a micro-pressure

valve (see Figure 2) 2301 type self-operated differential

pressure regulator and 2101 type self-operated micropressure regulator is characterized by:

1. For single-seat micro (differential) pressure valve, if the upstream pressure ≥ 100KPa, the installation of

2001 type self-operated for pressure reduction to ≤ 100KPa, so can be used for particularly small pressure

occasions (such as 0.5KPa).

2. The actuator element is extremely sensitive, very small pressure changes will be sensed.

3. Pressure regulation is extremely convenient, it can be adjusted set value without stopping production.

P1 signal pressure

Downstream pressure regulation

△P=P1-P3

Downstream pressure regulation △

P=P2-P1

Differential pressure regulation principle

Micro pressure regulation principle (Figure 2)

Micro pressure regulation system

193

Product

BAIC GROUP

Figure 3: 2101 self-operated

micro pressure regulator

Figure 4: 2301 self-operated

micro pressure regulator

No. Name Material No. Name Material

1 Seal cover 2Cr13 1 Upper valve seat 1Cr18Ni9Ti

2 Spring seat 45 2 Lower valve seat 1Cr18Ni9Ti

3 Spring 60Si2Mn 3 Regulating disk 2Cr13

4 Tray 1Cr18Ni9Ti 4 Spring seat 45

5 Membrane 5 Bellows 1Cr18Ni9Ti

Nominal diameter DN (mm)

Nitrile rubber

6

20

6

Actuator outer

25

membrane chamber

Small Q235

32

Oil resistant rubber

7

40

7

50

Valve core Push rod

65

PTFE 2Cr13

8

80

8

100

Valve seat Valve stem

Rated flow

coefficient K

1Cr18Ni9Ti 1Cr18Ni9Ti

9

2101/2301 Type

Valve core

5

9

8

1Cr18Ni9Ti

12.5

10 Valve body

20

Valve body

ZG230-450

32

ZG230-450 ZG1Cr18Ni9Ti

Main technical parameters and performance indicators (Table 1)

50 80 125

2304 Type 53 83

Rated stroke(mm) 5 6 10 15 20

Nominal pressure PN(MPa) 0.10 1.0

Differential pressure regulation range (KPa) 0.5～5.55～10 9～14 13～

General design range

19

18～24 22～28 26～3331～38 36～44 42～51 49～5856～66

64～7876～9088～100

Medium temperature ( ℃ ) ≤80

Regulation accuracy (%) ≤10

Allowable leakage

amount(1/h)

2101/2301 Type Hard seal 10-4 × rated valve capacity (Class IV) (GB/T4213-92) Soft seal: Class VI

2304 Type 5×10-4×rated valve capacity (Class III) (GB/T4213-92)

Note: 1. 2101/2301 type nominal pressure is 1.0MPa, 2304 type is 1.6MPa.

2. 2304 type differential pressure regulation range 36~44, 42~51, 49~58, 56~

66, 64~78, 76~90,88~100KPa。

Turbine high

pressure oil

Turbine

low-pressure oil

194

Steam, back end sealing oil

Air-side oil

D. Pump bypass regulation

pump feeding

B. Fan heating system

circulating air volume control

Product

BAIC GROUP

Determination of the differential (micro)

pressure valve regulation range

Backup differential pressure valve

Main differential

pressure valve

Hydrogen side

oil pressure

See Table 1 for segments of the differential

(micro) pressure regulation range.

Control range (control point) should be

selected near the middle value.

Air-side

oil pressure

Hydrogen side

oil pressure

Air-side sealing

oil pump

Air-side sealing

oil pump

DC

motor

DC

motor

Determination of the whole

machine action mode

There are two types of differential (micro)

pressure regulators, B-type and K-type.

B-type valve core initial position normally

open, when differential (micro) pressure

increases, the valve opening degree is

reduced or even closed

K-type valve core initial position normally

close, when differential (micro) pressure

increases, the valve opening degree is

increased.

Application examples

A. Seal oil system for hydrogen-cooled generator sets

B. Fan heating system circulating air volume control

C. Proportional control of two air flows

D. Pump bypass regulation

A: Seal oil system for hydrogen-cooled generator sets

C. Proportional control

of two air flows

Micro-pressure valve can be used in place of the 2407-16K type self-operated pressure regulator

with pilot when in front of the control valve

Unit: mm

195

Product

BAIC GROUP

Outline dimensions and weight

DN 20 25 32 40 50 65 80 100

A 308 394 308 394 308 394 394 394

H

2101/2301 Type 376 465 365 445 445 490 490 510

2304 Type 536 536

L

2101/2301 Type 150 160 180 200 230 290 310 350

2104 Type 222 222

Weight G(Kg) 12 18 25 32 45 58 68 76

Connecting pipe threaded fittings M16×1.5

Customized for diameters greater than 100

Ordering information

Please provide detailed media parameters (pressure, temperature, state before and after the

valve), media name, valve nominal pressure, valve nominal diameter, regulating system detailed

diagram (when the system control is more complex).

Technical parameters are subject to change without notice!